QIBEBT-IR
A mesoporous tungsten carbide nanostructure as a promising cathode catalyst decreases overpotential in Li-O-2 batteries
Liu, Shuo1,2; Wang, Chengdong1; Dong, Shanmu1; Hou, Hongbin1; Wang, Ben2; Wang, Xiaogang1; Chen, Xiao1; Cui, Guanglei1
2018
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume8Issue:49Pages:27973-27978
AbstractLithium-oxygen (Li-O-2) batteries as promising energy storage devices possess high gravimetric energy density and low emission. However, poor reversibility of electrochemical reactions at the cathode significantly affects the electrochemical properties of nonaqueous Li-O-2 batteries, and low charge-discharge efficiency also results in short cycle-life. In this work, functional air cathodes containing mesoporous tungsten carbide nanoparticles for improving the reversibility of positive reactions in Li-O-2 cells are designed. Mesoporous tungsten carbides are synthesized with mesoporous carbon nitride as the reactive template and carbon source. And mesoporous tungsten carbides in cathode materials display better electrochemical performance in Li-O-2 cells in comparison with mesoporous carbon nitride and hard carbon. Tungsten carbide-1 (WC-1) with larger specific surface area promotes reversible formation and decomposition of Li2O2 at the cathode and lower charge overpotential (about 0.93 V) at 100 mA g(-1), which allows the Li-O-2 cell to run up to 100 cycles. In addition, synergistic interaction between WC-1 and LiI could further decrease the charging overpotentials of Li-O-2 cells and improve the charge-discharge performances of the Li-O-2 cells. These results indicate that mesoporous electrocatalysts can be utilized as promising functional materials for Li-O-2 cells to decrease overpotentials.
DOI10.1039/c8ra05905e
WOS KeywordLITHIUM-OXYGEN BATTERIES ; MOLYBDENUM-DISULFIDE ; REDUCTION REACTION ; CARBON ; LI2O2 ; NITRIDE ; G-C3N4 ; CHARGE ; NANOPARTICLES ; COCATALYSTS
Language英语
Funding ProjectNational Science Fund for Distinguished Young Scholars[51625204] ; Key Scientific and Technological Innovation Project of Shandong[2017CXZC0505] ; Shandong Provincial Natural Science Foundation[ZR2014BQ004] ; National Natural Science Foundation of China[21473228] ; Qingdao Key Lab of Solar Energy Utilization and Energy Storage technology
WOS Research AreaChemistry
Funding OrganizationNational Science Fund for Distinguished Young Scholars ; Key Scientific and Technological Innovation Project of Shandong ; Shandong Provincial Natural Science Foundation ; National Natural Science Foundation of China ; Qingdao Key Lab of Solar Energy Utilization and Energy Storage technology
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000442078800039
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qibebt.ac.cn/handle/337004/12137
Collection中国科学院青岛生物能源与过程研究所
Corresponding AuthorChen, Xiao; Cui, Guanglei
Affiliation1.Chinese Acad Sci, Qingdao Ind Energy Storage Res Inst, Qingdao Inst Bioenergy & Bioproc Technol, 189 Songling Rd, Qingdao 266101, Peoples R China
2.Qingdao Univ Sci & Technol, Coll Environm & Safety Engn, Qingdao 266042, Peoples R China
Recommended Citation
GB/T 7714
Liu, Shuo,Wang, Chengdong,Dong, Shanmu,et al. A mesoporous tungsten carbide nanostructure as a promising cathode catalyst decreases overpotential in Li-O-2 batteries[J]. RSC ADVANCES,2018,8(49):27973-27978.
APA Liu, Shuo.,Wang, Chengdong.,Dong, Shanmu.,Hou, Hongbin.,Wang, Ben.,...&Cui, Guanglei.(2018).A mesoporous tungsten carbide nanostructure as a promising cathode catalyst decreases overpotential in Li-O-2 batteries.RSC ADVANCES,8(49),27973-27978.
MLA Liu, Shuo,et al."A mesoporous tungsten carbide nanostructure as a promising cathode catalyst decreases overpotential in Li-O-2 batteries".RSC ADVANCES 8.49(2018):27973-27978.
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